Sterilizer and drier.



A. JENSEN. STERILIZER AND DRIER. lBLIOALION FILED MAYB, 1909.'

Patented May 17, 14910.

s SHEETS-SHEET. 1.

INVENTOI ATTORN EY A. JENSEN.

STE-R'ILIZER AND DRIER. APP'LIGATION PIJLBD MAN, 1909.

Eatented May i7, 1910.A

3 SHEETS-SHBET 2.

I WITNESJES .Y

INVENTOR ATTORNEY A. JIEINSEN.A

STBRILIZBR AND DEIER.

APPLIOATION FILED MAY a, 1909.

958,133. Patented may 17, 1910.

3 SHEETS-SHEET 3.

WITNESSES ATTORN EY AAGE JENSEN.' OF EUREKA, CALIFORNIA.

STERILIZER AND DRIER.

Specification of Letters Patent.

Patented May 17, 1910 Appia-ation mee May s, 1909. semi No. 494,896.

To all whom it may concern:

Be it known that I, Anon JENSEN, a citizen of the United States,residing at Eureka, in thecounty of Humboldt and State of California,have invented new and useful Improvements in Sterilizers and Driel-s, of

which .the following is a specification.

The object of the present invention is to provide an improved apparatusfor sterilizing and drying by means of hot air.

In creameries, and in other places where food is prepared fortransportation or for storage, it of the greatest importance that thevessels for containing the food should be perfectly clean and thoroughlysterilized.`

. Such cleansingand sterilization are effected by hot water and steam,and, in consequence, after the sterilization has been effected, there isgreat liability of condensation of moisture taking place, and theformation or collection of a small quantity of water in the vessel,which condition is favorable to the growth of bacteria. By not onlysterilizing, the vessels, butt by also rendering them perfectly dry, itis impossible for bacteria to develop.

l In the accompanying drawing, Figure 1 is a perspective view of myimproved apparatus; Fig. 2 is aside view, partly in section, thereof;Fig. 3 is a longitudinal secv tion on the line B of Fig. 4; Fig. 4 is ahorizontal section on the line 4 4 of Fig.

the casing of the blower.

3; Fig. 5 is an enlarged cross section of a.

blower and turbine; Fig. 6 is -a similar view of the modied formthereof.

Referring to the drawing, 1 indicates a 'casing mounted on legs 2. Insaid casing inclosed a pipe '3, having a large number of coils,andcontinually descending from the top to the bottom of the casing, sothat, at no point thereof, is there any back pressure, or can any Watercollect in the coil. The lower end of the coil discharges through thebottom of the casing as shown at 4. Upon the top of the casing ismounted a blower 5 forcing air through a discharge passage 6 and into apipe 7 leading to the-bottom of the chamber 1 containing the coils. Thefan 8 of said blower is mounted upon the shaft 9 of a steam driventurbine 10, the casing 11 of which turbine is formed integral with Thesteam for driving said .turbine enters by an inlet 12 and escapes by anoutlet 13, which connects with the top of the coil of pipe 3. From theSide of the chamber 1 near its top pipes 14 lead through the middle ofsupporting plates 15 'and extend upward above said plates to a suitableheight. Said plates 15 are formed .fith apertures as shown at 16.

The operation of the apparatus is as follows :-Th e receptacles 17 to bedried are placed in an inverted position upon the supporting plat-es 15,so that pipes 14 extending upwardly through said plates extend into saidreceptacle. Steam being admitted by the steam inlet 12 in the turbinepropels the turbine and. on escaping, enters the coil 3 and descendsthrough the same, heating the chamber 1, and finally escaping at the bottom, at the point 4. The rotation ofthe turbine 10 impels the blower,and forces a current of air down to the bottom of the chamber 1, fromwhich it ascends, being gradually heated `by the coil 3 and is es-pelled with considerable force through pipes 14 and fills the interiorof the receptacles 17 escaping. through the openings' 16 in thesupporting plates 15,

In case a very high degree of heat is required live steam may beintroduced into separate coils 30 by a pipe 18 controlled by a valve 19,the outlet at the lower end of said coils being contracted bya valve 31,which will permit of the escape of the water of condensation, whilemaintaining vsufficiently high the pressure, and therefore thetemperature, of the steam in said coils. From said pipe 18 pipes 20 maylead to the pipes 14, for the purpose of lling the receptacles with livesteam to sterilize the same.

Instead of the blower being driven by a turbine it may, as shown in Fig.6, be driven from a shaft 21 hav-ing fast and loose pulleys 22, 23,adapted to be driven by a belt.

The above construction possesses the advantages that it not onlydirectly destroys bacteria, but, by removing all moisture from .thereceptacles, it deprives bacteriallife of any subsistence. Moreover itprolonge the life of any metallic-food containers, by leaving themabsolutely'dry, thereby preventing the corrosion caused by moisture.

The apparatus can be successfully used for the dry sterilization of milkreceptacles and dry utensils in general, of bottles in breweries, drugstores, wineries, distilleries, and

in fact, in any kind of receptacles for liquid or solid food.

The ap aratus is-self-regulating as to the amount ci) steam required'for the purpose of heating the air, as, when a small amount of 'ggg:158,133

hot air is necessary, then the blower will be driven at a low speed, andtherefore also the turbine will rotate at a low Speed, and the amount ofsteam required will be correspondingly reduced. On' the other hand, ifau increased Quantity of hot air is required, the turbine Will be dri\en at a eorresl'iondingly high speed, and consequently the amount ofsteam escaping theretron'i and utilized to heat the air will beproportionately increased.

l. The combination of a casing of a heating chamber, a blower supportedthereon` :irranged to impcl air into said chamber, :i perforatedsupporting plate secured to. and

supported by, said casing, anair conduitv leading 'trom said casingthrough said perforated late, and a steam coil within the casing`substantially as described. l

Q. The combination of a casing of a heating chamber, a blower supportedthereon, an air pipe leading therefrom to the lower portion of saidchamber for conducting air thereto, a perforated supporting platesecured to, and supported by, said easing, an air conduit leading fromthe top ot said easing through said perforated plate, a steam turbinesupported on said casing co-axially with said blower, a pipe forsupplying live steam thereto, a steam coil in the upper-part ot saidchamber connected with sald pipe,

and a steam eoil in the lower part of the air pipe leadingtherefrom tothe lower portion ot said chamber for conducting air thereto, :iperforated supporting plate secured to, and supported by, said casing,an air conduit leading from the top ot` said easing through saidperforated plate, a steam turbine supported on said casing eo-axiallywith said blower, a pipe for supplying live steam thereto, a steam coilin the upper part o t' said chamber connected with said pipe, a steamvcoil in the lower part of the chamber connected with the exhaust` fromthe turbine, and a steam pipe leading from the live steam supply pipethrough said a'ir conduit, substantially as described.

In testimony whereof I have hereunto setmy hand in the presence of twosubscribing witnesses.

AAGE JENSEN.

Witnesses i J. M. NIssoN, FRANK h xZEo.

